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    • 37. 发明申请
    • Image pickup optical system and camera having it
    • 摄像光学系统及相机
    • US20050063072A1
    • 2005-03-24
    • US10913208
    • 2004-08-06
    • Akira Harada
    • Akira Harada
    • G02B13/00G02B15/173G02B15/14G02B9/34
    • G02B15/173
    • The present invention discloses an image pickup optical system which has a first lens unit with positive optical power, a second lens unit with negative optical power, a third lens unit with positive optical power, and a fourth lens unit in order from an object side to an image side, where the second lens unit moves toward an image side and the third lens unit moves toward an object side respectively during focusing from an infinite object to a short distance object. The first lens unit has a first lens sub-unit, and a second lens sub-unit in order from an object side to an image side, and corrects a blur of a taken image by moving the second lens sub-unit so as to have a component in a direction orthogonal to an optical axis. Thereby, the present invention realizes the image pickup optical system which can always obtain a favorable image even if a shake of a camera or the like arises.
    • 本发明公开了一种具有正光焦度的第一透镜单元,具有负光焦度的第二透镜单元,具有正光焦度的第三透镜单元和第四透镜单元的图像拾取光学系统,从物体侧到 图像侧,其中第二透镜单元朝着图像侧移动,并且第三透镜单元在从无限对象到短距离对象的聚焦期间分别朝向物体侧移动。 第一透镜单元具有从物体侧到像侧的顺序的第一透镜子单元和第二透镜子单元,并且通过移动第二透镜子单元来校正拍摄图像的模糊,从而具有 在与光轴正交的方向上的分量。 因此,本发明实现了即使出现相机等的晃动也能始终获得良好的图像的摄像光学系统。
    • 39. 发明授权
    • Photographic lens and photographing apparatus having the same
    • 摄影镜头及具有相机的拍摄装置
    • US06246833B1
    • 2001-06-12
    • US09251493
    • 1999-02-17
    • Akira Harada
    • Akira Harada
    • G03B1700
    • G02B15/173G02B7/04G02B9/34
    • A photographic lens includes, in order from an object side to an image side, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power and a fourth lens unit of negative refractive power, wherein, during focusing from an infinitely distant object to a minimum-distance object, the first lens unit remains stationary, the second lens unit moves toward the image side, the third lens unit moves toward the object side and the fourth lens unit moves in such a way as to include a locus convex toward the object side.
    • 摄影透镜从物体侧到像侧依次包括正屈光力的第一透镜单元,负折光力的第二透镜单元,正折光力的第三透镜单元和负折射率的第四透镜单元 其特征在于,在从无限远物体到最小距离物体的聚焦期间,第一透镜单元保持静止,第二透镜单元朝向像侧移动,第三透镜​​单元朝向物体侧移动,第四透镜单元移动 以包括向物体侧凸出的轨迹的方式。